//
//  main.m
//  07-NSNumber
//
//  Created by apple on 13-8-12.
//  Copyright (c) 2013年 itcast. All rights reserved.
//

#import <Foundation/Foundation.h>

int main()
{
    // @20  将 20包装成一个NSNumber对像
    
    
    NSArray *array = @[
                       
                       @{@"name" : @"jack", @"age" : @20},
                       
                       @{@"name" : @"rose", @"age" : @25},
                       
                       @{@"name" : @"jim", @"age" : @27}
                       ];
    
    
    // 将各种基本数据类型包装成NSNumber对象
    @10.5;
    @YES;
    @'A'; // NSNumber对象
    
    @"A"; // NSString对象
    
    
    
    // 将age变量包装成NSNumber对象
    int age = 100;
    @(age);
    //[NSNumber numberWithInt:age];
    
    
    NSNumber *n = [NSNumber numberWithDouble:10.5];
    
    
    int d = [n doubleValue];
    
    
    
    int a = 20;
    
    // @"20"
    NSString *str = [NSString stringWithFormat:@"%d", a];
    NSLog(@"%d", [str intValue]);
    
    return 0;
}

void test()
{
    NSNumber *num = [NSNumber numberWithInt:10];
    
    NSDictionary *dict =  @{
                            @"name" : @"jack",
                            
                            
                            @"age" : num
                            
                            };
    
    NSNumber *num2 = dict[@"age"];
    
    
    int a = [num2 intValue];
    
    NSLog(@"%d" , a);
}
